package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.model.service.SystemUserService;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import io.jsonwebtoken.lang.Strings;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;


import java.util.UUID;
import java.util.concurrent.TimeUnit;


@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private StringRedisTemplate redisTemplate;

    @Autowired
    private SystemUserService systemUserService;


    @Override
    public CaptchaVo getCaptchaVo() {

            SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
            specCaptcha.setCharType(Captcha.TYPE_DEFAULT);

            String code = specCaptcha.text().toLowerCase();

            String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID();

            String image = specCaptcha.toBase64();
            redisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);

            return new CaptchaVo(image, key);

    }

    @Override
    public String checkLoginMess(LoginVo loginVo) {

        //登录验证 验证码是否输入
        if (!Strings.hasText(loginVo.getCaptchaCode())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }


        //验证码是否正确
        String code = redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        //验证码是否过期
        if (code==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //验证码是否正确
        if (!code.equals(loginVo.getCaptchaCode().toLowerCase())){
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //验证用户名 和密码

        //用户名是否存在
        LambdaQueryWrapper<SystemUser> lambdaQueryWrapper =new LambdaQueryWrapper<>();
        lambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(lambdaQueryWrapper);
        if (systemUser==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }

        //用户名 密码是否正确
        System.out.println(systemUser.getUsername());
        System.out.println(loginVo.getUsername());
        String password = loginVo.getPassword();
        System.out.println(DigestUtils.md5Hex(password));
        System.out.println(systemUser.getPassword());
        if (!systemUser.getPassword().equals(DigestUtils.md5Hex(password))){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }

        //用户是否被禁用
        if (systemUser.getStatus().equals(BaseStatus.DISABLE)){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }

        String token = JwtUtil.createToken(systemUser.getId(), systemUser.getUsername());


        return token;
    }


}
